looking for terminology recommendations concerning non-rooted FQDNs

Eric Brunner-Williams brunner at nic-naa.net
Fri Feb 22 22:10:02 UTC 2013


On 2/22/13 11:01 AM, Andrew Sullivan wrote:
> Without getting into metaphysics, we can think of the dot in the
> presentation format as representing the separators in the wire
> format.  In the wire format, of course, these separators are octets
> that indicate the size of the next label.  And since the final label
> is null, the separator indicates a zero length in the wire format.
> Therefore, in the presentation format, the final separator is
> indicative of the (null) root label after.

just keep in mind that while "." ought to be a label separator, the
utc's bidi algorithm allows the directionality of a label to "leak"
across the "period" character, where it is not a terminal character.

hilarity ensues.




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